Casio fx-3650P - Manual (Page 48)

E-46
Technical Information
kWhen you have a problem......
If calculation results are not what you expect or if an error occurs, perform
the following steps.
1. Press
A B 2
(Mode)
<
to initialize all modes and settings.
2. Check the formula you are working with to confirm it is correct.
3. Enter the correct mode and try performing the calculation again.
If the above steps do not correct the problem, press the
5
key. The
calculator performs a self-check operation and deletes all data stored in
memory if any abnormality is detected. Make sure you always keep written
copies of all important data.
kError Messages
The calculator is locked up while an error message is on the display. Press
t
to clear the error, or press
e
or
r
to display the calculation and
correct the problem. See “Error Locator” for details.
Math ERROR
• Causes
• Calculation result is outside the allowable calculation range.
• An attempt to perform a function calculation using a value that exceeds
the allowable input range.
• An attempt to perform an illogical operation (division by zero, etc.)
• Action
• Check your input values and make sure they are all within the allowable
ranges. Pay special attention to values in any memory areas you are
using.
Stack ERROR
• Cause
• The capacity of the numeric stack or operator stack is exceeded.
• Action
• Simplify the calculation. The numeric stack has 10 levels and the
operator stack has 24 levels.